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#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
const int NMAX = 18;
int n, m, x[NMAX + 1];
void afisare()
{
for (int i = 1; i <= m; i++)
g << x[i] << ' ';
g << '\n';
}
void bkt(int k)
{
if (k == m + 1)
afisare();
else
{
for (int i = x[k - 1] + 1; i <= n - m + k; i++)
{
x[k] = i;
bkt(k + 1);
}
}
}
int main()
{
f >> n >> m;
bkt(1);
f.close();
g.close();
return 0;
}